While the OEMs overwhelmingly opt for paper air filters, cotton gauze filters are a staple of aftermarket induction systems. So what makes the cotton gauze medium so much more conducive to airflow?

Some modifications that were once exclusive to turners and hot-rodders have made their way to the mainstream, and there’s no better example than a cold-air intake. These kits relocate your engine’s ...

If you drive a car with an internal combustion engine, which is most modern vehicles that run on fossil fuels, then your engine requires a precise combination of fuel and oxygen to function properly.

Q: During my car's last routine service, the workshop replaced the air filter. It was the first time the air filter had been replaced. What does this filter do and is it necessary to replace it? Also, ...